When you are newly pregnant, the fertilized egg is not long in bed and unstable, so it is easy to cause miscarriage and intercourse is prohibited. Pregnancy is divided into early pregnancy, middle pregnancy and late pregnancy, early pregnancy refers to 13 + 6 weeks before pregnancy, the placenta is not fully formed, sex is likely to cause miscarriage, can not have sex. The middle pregnancy refers to 14 weeks to 28 weeks, when the placenta is well developed and moderate sex is possible. The late stage of pregnancy is 28 weeks to 40 weeks, during this period 32 weeks of pregnancy can have sex, after 32 weeks to avoid sex, after 32 weeks of pregnancy sex will increase the chance of premature rupture of fetal membranes and uterine cavity infection, is also to prohibit sexual life. Even in the week of pregnancy when you can have intercourse, you have to control it, the magnitude of sexual life is too large to cause premature abruption of the placenta, endangering the health of the mother and child. To control the number of intercourse, each intercourse time should be short, shallow penetration, light action, to control to which extent, there is no definite, to the comfort of pregnant women prevail. Secondly, it is important to pay attention to hygiene before and after intercourse, and both parties should wash their hands and external genitalia to reduce the risk of infection. Even in the weeks of pregnancy when intercourse is possible, intercourse is prohibited if the pregnant woman has the following conditions Such as unexplained vaginal bleeding, previous history of miscarriage or preterm delivery, current risk of miscarriage or preterm delivery, low placental status, cervical insufficiency, hypertension during pregnancy, twin or multiple pregnancies, and inflammation of the reproductive tract in both partners. In a word, coitus is prohibited for newly pregnant women to avoid inducing miscarriage.